HT6542B Просмотр технического описания (PDF) - Holtek Semiconductor

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Компоненты Описание

производитель

HT6542B

Keyboard Controller with PS/2

Holtek Semiconductor 

HT6542B

D.C. Characteristics

Symbol

Parameter

Test Condition

VDD Condition

VDD

Operating Voltage

—

–

IDD

Operating Current

5V

FOSC=8MHz

No load

VIL

Input Low Voltage

—

—

VIH

Input High Voltage

—

—

P10~P16, KBCI, KBDI,

D0~D7, RC, A20, P22, P23,

VOL

KB-OBFO, MS-OBFO

5V VOL=0.5V

Output Low Voltage

IOL=6mA

VOH

D0~D7, KB-OBFO, MS-OBFO,

KBCO, KBDO, A20, RC

Output High Voltage

5V VOH=4.5V

IOH=0.3mA

RPH1

P10~P16, KBD-INH

Pull-High Resistance

—

—

RPH2

KBCI, KBDI, CS, RD, A0,

WR Pull-High Resistance

—

—

Min. Typ. Max. Unit

4.75

5

5.25

V

—

4

6

mA

–0.5 —

0.8

V

2

—

VDD

V

—

—

0.5

V

4.5

—

—

V

10

20

30

ΚΩ

30

50

70

ΚΩ

4

30th Nov ’95

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